Improvement in flour and middlings separators



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L RIGBY.

Flour andJlliddlings Sephrators. N0.156,'063. Patented0ct.20,1874.

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l. RIGBY. Flour and Middlings Separators.

No 156 063 Patented Oct. 20,1874.

'IHE GRAFHICCO. PM OTO-LITH,35 & 4| PARK PLACENX,

UNITED STATES PATENT OFFICE.

JAMES RIGBY, OF SPRINGFIELD, OHIO, ASSIGNOR OF ONE-HALF HIS RIGHT TO V. A. FARR, OF SAME PLACE.

IMPROVEMENT IN FLOUR AND MIDDLINGS SEPARATORS.

Specification forming part of Letters Patent No. 156,063, dated October 20, 1874; application filed June 23, 1874.

To all whom it may concern:

Be it known that I, JAMES RIGBY, of Springfield, in the county of Clarke and State of Ohio, have invented an Improvement in Flour and Middlin gs Separator and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, making part of this specification--- Figure 1 being a top view of the separator; Fig. 2, a longitudinal vertical section of the same in a plane indicated by the line a: m, Fig. 1 Fig. 3, an end view thereof; Fig. 4, a transverse vertical section of the same in a plane indicated by the line y y, Fig. 1; Fig. 5, a section of a part detached.

Like letters designate corresponding parts in all of the figures.

The nature of my invention consists in a sieve, screen, or equivalent separator, to which peculiar motions are imparted, as hereinafter specified.

Let A represent the frame of the separator, of any suitable and desired construction; or, when the separator may be used in connection with other machinery,'it is suitably arranged in the frame thereof. Let B represent the sieve, screen, or equivalent separator, which, in this specification, I shall designate by the single term sieve. To this sieve I impart a compound motion, one upon a central axis or shaft oscillating through a quarter of a circle, or thereabout, the motion being quick and suddenly arrested by striking a suitable stop at the termination of each movement, the other motion being a longitudinal reciprocating motion through a short distance, made during the axial motions, or during a part of the same.

To effect these motions, I have devised substantially the following mechanism as a suitable and effective means: The sieve B has both its axial (or see-saw) and longitudinal reciprocating motions upon a horizontal rod or shaft, at, around which its bearings 12 b clasp. This shaft a has a continuous revolving motion in one direction, and at one end it turns in the tubular end of another short shaft, 0,

which has an equal continuous revolving motion in the opposite direction. These two opposite motions may be produced from a single driving-shaft, d, having two driving-pulleys, c f, from which, respectively, two belts or bands, 9 h, pass to two other pulleys, k, of

tially as shown. The sieve, as it is alternately V tilted from side to side by these tappets, strikes with its lower side edges alternately upon a cross-bar, p, of the frame or an equiv alent stop or stops, by which a sudden arrest and jarring of the sieve is produced. Simultaneously with this axial oscillating or seesaw motion (which may be used alone with good effect) the alternate or reciprocating longitudinal motion is produced by means of two stationary cams or inclined surfaces, 1" s, suitably shaped, and arranged in the frame, against which cams the two lower end edges of the sieve, or two wipers, t u, attached thereto, as shown, alternatel'ystrike and cause the sieve to move endwise during its axial motion. This longitudinal movement of the sieve releases alternately the pins or projections n 0 on the same from the tappets Z m near the close of each tilting movement, and brings the opposite projection into position to be struck by its tappet, when the same again comes round into position therefor. These motions, communicated to the sieve, produce a very effective action in performing its functions.

Two or more sieves, similarly operated, may be situated in the same frame or machine, one above another, or otherwise arranged, as may be desired.

What I claim as my invention, and desire to secure by Letters Patent, is-- 1. A sieve, B, arranged to oscillate axially and reciprocate longitudinally, substantially in the manner and for the purpose herein 3. Stationary cams 1' s, in combination with specified. the axially oscillating sieve B, substantia11y 2. Shafts a a, revolving in opposite direcas and for the purpose specified.

tions and provided with respective tappets 1 JAMES RIGBY.

m, in combination with pins or projections n Witnesses 0 on the sieve B, substantially as and for the V. A. FARR,

purpose herein specified. WM. H. WILLIS. 

